George p



(No Model.)

G. P. HUTOHINS.

STOPPING AND BRAKE OPERATING MECHANISM FORLOOMS. No. 416,625. PatentedDec. 3, 1889.

K G y urck in;

N. PETERS. FhnIo-Lllhugnpher, Washingion, D. C.

UNITED STATES GEORGE F. HUTCHINS, OF wORcEsTER, MASSACHUSETTS, ASSIGNORTO THE KNOWLES LOOM WORKS, OF SAME PLACE.

STOPPING AN D BRAKE-OPERATING M ECHAN ISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 416,625, dated December3, 1889.

Application filed September 4, 1889- Sen'al No. 322,945. (No model.)

and Brake-Operating Mechanism for Looms 3 and I do hereby declare thatthe following is a full, clear, and exact description thereof, which, inconnection with the drawings making apart of this specification, willenable others skilled in the art to which my invention belongs to makeand use the same.

-My invention relates to looms, and more particularly to stopping andbrake-operating mechanism for looms; and the object of my invention isto provide means by which the brake will be automatically released bythe movement of the shipper in starting the loom.

-My invention consists in certain novel features of construction andoperation of a stopping and brake operating mechanism, as will behereinafter described,and the nature of the same indicated by theclaims.

Referring to the drawings, Figure 1 shows in elevation portions of aloom suflicient to illustrate my invention applied thereto. Fig. 2 is aplan of a portion of the lay and breastbeam, showing the knock-offmechanism. Fig. 3 is an end elevation, looking in the direction of arrowa, Fig; 1, showing the connections to the brake-lever; and Fig. 4 is anend elevation, looking in the direction of arrow I), Fig. 1, showing thepulley, brake, and shipper. i

In the accompanying drawings,1 is the loomside; 2, the crank-shaft; 3,the bottom shaft; 4, the lay; 5, the crank-connector, and 6 thebreast-beam. The pulley-shaft7 is mounted in boxes 8 in stands 9, boltedto the loom-side,

and carries on its outer end a brake-drum 10,

tight pulley 11', and loose pulley 12, retained on shaft 7 by collar 13.The opposite end of the pulley-shaft 7 is geared to the bottom shaft 3,and the bottom and crank shafts are geared together, all as usuallyarranged, the gearing being here shown by dotted lines 14, Fi 1.

The shipping mechanism shown is the same as that shown and described inUnited States readily compressed a distance equal to that PATENT OFFICE.

Patent N 0. 197,641, of November 27, '187 7, and consists of ashipper-handle 15, fast on the outer end of a rod'l6, which extends thelength of the loom and is supported in bear ings in the loom-sides, andcarries on its opposite outer end a second shipper-handle similar to thehandle 15, except that it has no projection below the hub. By means ofthe handles 15 and connecting-rod 16 the shipping mechanism may beworked from either end of the loom.

Projecting below the hub of the shipperhandle is an arm 17, whichcarries a pin 18, which engages a slot 19 in the end of one arm of lever20, pivoted at 21 on a stud fast in the loom-side. The other arm oflever 20 is jointed to shipper-rod 22, which may slide freely in abearing 25, bolted to the loom-side and bearing 24 on stand 9. The outerend of rod 22 carries an ordinary beltrshipper fork 25, fastenedadjustably by set-screw 26. Confined on rod 22 between collar 27 andstand 23.is a coil-spring 28, of. sufficient strength to be between thetwo positionsof the belt on the pulleys 11 and 12, and ofsufficientstrength to shift the belt in the time required by the speedof the loom, the spring 28 acting to throw'the belt otf from the tightpulley 11 onto the loose pulley 12.

By reason of the opposition in the curvature of the arcs described bypiu18 and point of lever 20 the pin slides in slot 19 a short 1 distancewhen those parts are rotated about their pivot-centers throughabout theangle indicated by the dotted lines 29, the pin 18 passing toward thelower end of the slot when it nears the line joining the centersof shaft16 and stud 21 and toward the upper end of the slot 19 as it nears theextremes of the arcs described.

In the upper end of the slot 19 is formed a small depression 30, intowhich the pin 18 may drop at one extreme of the movement, preventing thepin from sliding back in the slot while the tension of the spring 28 ison the shipper-rod l6, and thus locking the parts in position with thebelt upon the tight pulley 11.

The shipper-lever may be looked very deli- 10o cately or as securely asdesired by varying the size of the depression 30.

A slight opposite movement of the lever releases the pin from thedepression 30, when the spring 28 completes the shifting of the belt.

The releasing of the shipper-lever above described is accomplishedautomatically in practice through the protector mechanism and aknock-off lever 31, pivoted ona stand under the breast-beam andprojecting out through the loom-side in such a position as to justengage the shipper-handle when the belt is shifted onto the tight pulley11.

The protector-dagger 32 and feeler 33 are so set that when thebox-binder 34 is pressed out by a shuttle the dagger clears the knockofflever 31 as the lay beats up, and when the lay beats with empty boxesthe dagger engages lever 31, throwing the pin 18 out of its depressionand shifting the belt to the loose pulley 12.

Attached to stud 35, fast in stand 9, is a friction-band 36, whichpasses around the friction-drum 10, Figs. 1 and 4, and is attached atits opposite end to eyebolt 37, which is secured by nuts 38 to the endof frictionlever 39, pivoted at 40 on a stud fast in the loom-side.Friction-lever 39 extends to the front of the loom and terminates in afootplate 41, near which is an car 42, in which is fast stud 43, onwhich is pivoted connector end 44, into which rod is fastened bysetscrew 46. (See Figs. land 3.) Rod 45 passes loosely through. a holein stand 47, fast to the loom-side, and has confined upon it betweenstand 47 and set-collar 48 a coil-spring 49,

thus drawing down and tightening upon its drum the friction-band 36. Thetension of the spring 49 may be adjusted by sliding the collar 48 on itsrod 45, and the position of the friction-lever 39 and its connectionswith reference to the binding-point of the band is adjusted by nuts 38on the eyebolt 37.

The rod 45 extends upward and terminates in a socket 50,.into which isfastened adj ustably by set-screw 51 a plate 52, which passes looselythrough a slot in stand 53, fastened to the loom-side. Fastened byset-screw 54 into stand 53 is a bar 55, one end of which is shaped likea ratchet-tooth and projects slightly into the slot in stand 53. Cut inplate 52 is a notch 56, adapted to be engaged by the ratchet-tooth endof bar 55, by which the friction-lever 39 may be held in a de pressedposition against the tension of spring 49, with the friction-band 36slackened on its drum 10. Thenotch 56 is kept in engagement with bar 55by the action of flat spring 57, fastened by set-screw 58 to the end ofsocket 50, the spring passing through the same slot with plate 52 andpressing upon hole in the-lower part of stand 53, and which just fillsthe space'between the plate52 and the knock-off lever 31 when plate 52is in engagement with bar 55 and the loom is shipped on.

When the loom protects as the lay beats up,

swinging the knock-off lever 31 to disengage the shipper-lever, the rod59 pushes the plate 52 off the bar 55 against the tension of the spring57, allowing spring 49 to operate the brake.

When the loom is stopped by throwing the shipper-lever by hand, thebrake is not set; but whenever the loom knocks off automatically thebrake will be set, and before the loom can be started again the brakemust be released, which has heretofore been done by pressing down thefriction-lever 39 by the foot until the plate 52 catches'on bar 55, andbefore the shipper is thrown on.

on fancy looms the head motion is necessarily on the opposite end of theloom from the pulley and shipper motion. WVhenever the loom is stopped011 account of mispicks, it is necessary for the weaver to be at thehead end tocorrect the pattern, and this necessitates traveling thelength of the loom to release the brake before the loom can be shippedon. To avoid this I have added to the mechanism already described thefollowing parts: An arm 60 is pivoted on stud 43 beside connector 44 andextends upward and carries fast in its upper end a rod 61, whichterminates in a hook 62, which comes in position to be engaged, as willbe described, by

joint-pin 63, which connects lever 20 to shipper-rod 22, and whichprojects from the joint for that purpose. Fast in ear 64 on the upperend of arm 60 is a light flat spring 65, which extends downward andterminates between the points of two other similar springs 66, which arefastened in an arm 67, which is itself fast on stud 43 by means ofset-screw 68. (See Fig.

The several parts are shown in Fig. 1 in the positions they occupy afterthe loom has been stopped automatically by the knock-0E.

In shipping the loom on the first part of the forward movement of handle15 causes the joint-pin 63 to press the .hook 62'downward, which by itsconnection to frictionlever 39 compresses spring 49 till plate 52catches in its retaining-notch, when theloom is free to be started bythe continued movement of the shipper-lever. WVhen pin 63 reaches thelowest point in the are described by it, at-or before which time thebrake-plate 52 must be depressed to the point of engagement with itsretaining-bar 55, the springs 65 and 66 allow the hook 62 to be carriedforward till joint-pin 63 slips out of its seat in the hook 62, when thesaid springs return the hook 62 to its normal position, which is such asto hold it against the joint-pin whenthe loom is shipped ofi. Theclearance between the joint-pin 63 and its seat in the hook 62 is justsufficient to allow the pin to pass the 7 point 70 in case thebrake-operating spring 49 completes its action before the shipper-rod 45and belt-shifter get home.

I have shown in the drawings and described my invention applied to tightand loose pulley driving; but it can be applied and used with equaladvantage with friction clutch pulleys, if desired.

It will be understood that I do not limit myself to the use of theshipping mechanism shown in carrying out my invention, as myimprovements may be applied equallywell to any shipping mechanism whichemploys the shipping-lever jointed to the rod similar to 20 and 22,without reference to the method of locking the shipper on or ofconnecting to the knock-oft.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In stopping and brake-operating mechanism for looms, the combination,with the friction-drum, band, lever, operating-spring, rod,detaining-catch and spring, pivoted spring-confined releasing-hook, thehook-confining springs, shipper-lever, joint-pin, and

shipper-rod, of the driving, shipping, knockoif, and protectormechanisms and the lay,

substantially as shown and described.

